GSAT 17 is a geostationnary satellite, the heaviest Indian-built spacecraft ever built. to be located at 93.5 degrees east longitude for operating position. Outfitted with C-band broadcast transponders and an S-band payload designed for mobile services, GSAT 17 will join 17 current satellites in India's communications network. GSAT 17 also hosts a payload to relay meteorological data and has a search and rescue support mission.